Improvement in watch-case cutter



.l Quinn intra strnt @fitta `JOHN FORTENBAGH, JACOB FOR'l'E-NBACH, ANDJOSEPH FQRTENBACH, OF

. i GARLSTADT, NEW JERSEY. t

Leners Patent No. 75,892, dans March 24, 1868.'

IMPROVEMENT AIN WATCH-CASE GUTTER.

'ro ALI. WHoM 1r MAY coNcEnN:

Be it known that we, J ouN FoRrENBAcH,"JAcoB Fonrnsnucn, and JosEPHF'onTEn'BAcH, of Carlstadt, in the county of Bergen, and Stateof`New Jersey, have invented a new and improved Cutter for Watch-Cases;and we do hereby decliirethat the following is a full, cle-ar, and exactdescription thereof, which will enable others skilled in the art to makeand use the same, reference being` had to the accompanying drawings,forming part of this specification. 4 l

'Figure 1 represents a vertical longitudinal section of our improvedwatch-case cutter, taken on the plane of the line x zfg. 3.

Figure 2 is a side elevation, partly in section, 'of the same, the planeof section being indicated by the line y y, iig. 1. y p

Figure-3 is a similar view as iig 2, showing the machine adapted forcutting centres.

Figure 4 is a detail plan or top view nfl-the same.

Figure' is a plan view of the wateh-cover or back eut by our improvedmachine,

Figure 6 is a .plan view of a watch-centre cut by our improved machine.

Figure 7 isa plan view of-a watch-centre and covercut by our improvedmachinev..

Similar letters of reference indicate corresponding parts. i I

This invention.v relates to a new machine for 'cutting the recesses intowatch-centres and covers for the reception of the hinges, arid consistsin such a construction of the supports of the pieces to be cut, and insuch an arrangement of cutters, that the desired result will be obtainedwith the greatest accuracy, easehand dispatch.

Heretofore, the aforesaid recesses had invariably to be eut by hand, andthe process of cutting them occul pied a considerable timein themanufacture of watchcases. Furthermore, no great accuracy can beobtained without the use of proper machinery. A i

A, in the drawing, represents a frame, of suitable construction, made ofwood or metal, as may be desired. From the same projects an ear o rears, a, to which one end' of a frame, B, is pivoted, which forms twoparallel rails, b b. The free end of the frame B can be' set at anydesired height labove the bed A by means of a screw, c, or otherequivalent device, so that any desired degree of inclination can beimparted to the rails b. Upon the rails b isset a sliding carriage, C,from which a hollow turret, D, projects upward, as shown. To theunder-iside of the carriage C is pivotcd a lever, d, which, with oneend, fits under a disk or block, @that is I arranged within the turretD, whileiitsV other end tits below the end of alscrew,f, or otherequivalent device,

by means of which the height of the disk e in the vturret can beregulated.' Upon the adjustable disk e rests,

within the turret D, a block, E, which-is at its upper end madeconcavefor the reception of watcl1-covers, as

in fig. 2, or provided with a circular projection, g, for the receptionof centres, as in gs. Sand 4. vor which, if desired, has one end concaveand the other end provided with: the projection g, as in fig. 1, inwhich latter case it is inserted in the turret, so that` the desired endis "on top. The centre or cover is then placed upon the'end of thehloel:E, so that it may project somewhat from the upper ledge of the turret.By a C-shaped plate, F, which fits upon the upper end of the turret, andunder the heads of pins h h that project from the same, the

portion of the watch-case to be cut will be partly covered, as shown in4. The vcover or the centre can i then be clamped by turning the screwf,between the block E and plate F, as shown infigs. 2 and 3.

The plate F is so formed that a sufficient vportion of the cover, or ofthe centre, is left free and open, to be reached by tools from above, tofacilitate which the upper edge of the turret is depressed -opposite tosuch uncovered section ofthe cover or centre, as shown, so that thatsection may lie entirely free, as in igs. 2

" and 3. From the bed A project two or more uprights, G Gr, in whichhorizontal spindles or pins H H, have `,their bearings, said spindlesholding between thema horizontal shaft, I, as shown, or the saidshaft'may `have its bearings arranged in any other suitable manner. Onthe shaft are mounted three circular cutters,

t', j, and k, which are close together, and with `edges of the requiredshape. As rotary motion is'imparted to the shaft 1the cutters arerevolved. KThe carriage G is then moved under the cutters, the rails bhaving been J" adjusted so that the cutters will reach to the 'requiredydeptlron the case or cap to be cut. In the drawing, the shaft I isshown to be longitudinally adjustable, so that the cutters may bebrought' nearer to or further from the centre of thc turret, to adaptthe device for varioussized watch-cases; but if desired, thc cutters maybe adjustable on the shaft for the same purpose, and with equal eil'ect.

By means of the screw c the inclination of the rails may be so regulatedthat' the watch-ease to bc cut is at the required height, so that theincisions may bo made to the necessary depth. In cutting covers, as inlig. 2, the smallest cutter, z', serves to make the surface ofthestraight strip, z, which is generally soldered into or formed in thecovers, as in iig. 5, even with the edge of the cover. The secondcutter, j, cuts the groove m for the reception ofthe socket of thehinge, and the third and largest cutter, c, reruoves as much of the rimas is necessary to allow the lid to open as far as isxlesired, as willbeunderstood from fig. 7. Forcutting the centres, the cutter 7c removes asmuch of the rim as isvrequired to allow the necessary opening,j cuts thegroove n for the reception of the hinge-socket, and z'lattens a portionofthe edge-of a ring, o, which is lformed on the centre, as shown infig. G.

This invention is applicable to all kinds of watch-eases, and to allsizes.

We claim as new, and desire to secure by Letters Patentt l. The improvedmachine for cutting the hinge-recesses in watch-cases, made andoperating substantially as herein shown and described.

2. ,The up-and-down adjustable sliding turret D, when combined with thelever d, up-anddown adjustable block E, and clamping-plate F, all madeand operating substantially as herein shown and described.

3. The block E, for supporting the covers or centres of watchwascs, whenformed for the said object, substantially as herein shown and described.

4. The upanddown adjustable sliding turret, when carrying the cover orcentre of thc watch-ease, in combination with thelongitudiually-adjustable rotary cutters, by which the hinge-recessesare cut into the covers or centres, substantially as herein shown anddescribed.

JOHN' FORTENBACH,

JACOB FORTENBACH,

Witnesses: I JOSEPH FORTENBACH.

EMIL LDER, CHARLES HAGEMEISTER.-

